html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  -ms-touch-action: none;
  touch-action: none;
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
  font-size: 50px;
}
::-webkit-input-placeholder {
  color: #2b74d1;
}
body {
  font: 14px/1.5 arial,"Microsoft Yahei","微软雅黑","宋体",Helvetica, Arial, STXihei, "华文细黑", SimSun, sans-serif;
  color: #606266;
}

